<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app">
    <p>{{m1}}</p>
    <p v-text = 'm2'></p>
    <p v-html = 'm3'></p>
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
  <script>
    const app = new Vue({
      el:'#app',
      data:{
        m1:'只因1',
        m2:'只因2',
        m3:'<b>只因3</b>',
      }
    });
  </script>
</body>
</html>